Speciation & Hybridization Seminar

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(Monday, March 23rd, 2009: Speciation with Gene Flow in Salamanders)
(Monday, March 23rd, 2009: Speciation with Gene Flow in Cave Salamanders: Adaptive Shifts & Parapatric Speciation)
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http://darwin-online.org.uk/  click on the sixth edition of The Origin of Species...
 
http://darwin-online.org.uk/  click on the sixth edition of The Origin of Species...
  
=== Monday, March 23rd, 2009: Speciation with Gene Flow in Cave Salamanders: Adaptive Shifts & Parapatric Speciation ===
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=== Monday, March 23rd, 2009: Speciation with Gene Flow in Cave Salamanders: Coalescent Models, Adaptive Shifts & Parapatric Speciation ===
 
Discussion leader: [[LeRoy Robinson]]
 
Discussion leader: [[LeRoy Robinson]]
  

Revision as of 10:48, 2 April 2009

Spring 2009. EEB 5894- section 001, Instructor Chris Simon, Peoplesoft class number (12379)

Contents

Meeting time and place

We are meeting this semester in the Biopharm 3rd Floor Fishbowl Mondays and Tuesdays 2-3pm.

Please sign up for two dates on the schedule below. A list of topic ideas follows but you can choose anything related to speciation and hybridization.

Subtopic Ideas:

SPECIATION 1) What did Darwin say about speciation and hybridization? (First week) 2) When does a species become a species? How can the earliest stages of speciation be recognized? 3) How much genetic divergence should we expect within species? Are large genetic divergences within species due to polymorphisms/large population sizes, or artifacts, or are they simply due to our failure to recognize cryptic species? 4) Are there "speciation genes"? What are some examples? Are speciation genes restricted to a certain type of mutation or class of genes?

HYBRIDIZATION: It has been estimated that at least 25% of plant species and 10% animal species hybridize* 1) How much gene flow occurs across species boundaries and what are the consequences for species? 2) How can lineage sorting be separated from hybridization as a cause for phylogenetic uncertainty? 3) How important is hybrid speciation in nature 4) Conservation Biology: Should hybrids be shot or poisoned? Or not?

  • Mallet, 2005, 2007


Schedule for Spring Semester 2009

Note: the papers linked here require a user name and password to access. If you have forgotten the user name and/or password, contact Chris Simon. If you want to upload a PDF file for an upcoming discussion, use the PDF upload form. Uploading PDFs requires the same user name and password as viewing PDFs.

Monday, March 16th, 2009: Geographic Variants, Incipient Species, Species: Where to Draw the Line?

Discussion leader: Chris Simon

"On the Origin of Species...", Chapter II. Variation Under Nature

The text can be found in searchable form on line at... http://darwin-online.org.uk/ click on the sixth edition of The Origin of Species...

Tuesday, March 17th, 2009: Hydridization Between Recognized Species Was Well Documented in Darwin's Time

Discussion leader: Chris Simon

"On the Origin of Species...", Chapter IX. Hybridism

The text can be found in searchable form on line at... http://darwin-online.org.uk/ click on the sixth edition of The Origin of Species...

Monday, March 23rd, 2009: Speciation with Gene Flow in Cave Salamanders: Coalescent Models, Adaptive Shifts & Parapatric Speciation

Discussion leader: LeRoy Robinson

Pdficon small.gifNiemiller et al. 2008 Mol Ecol.pdf
Pdficon small.gifNosil 08 speciation with gene flow.pdf

Tuesday, March 24th, 2009: Does Gene Flow Constrain Adaptation or Vice Versa (Ecological Speciation)

Discussion leader: LeRoy Robinson

Pdficon small.gifNosil, Patrik. 2009. Cryptic color patterning Evol.pdf

Monday, March 30st, 2009: Conclusive Evidence for Sympatric Speciation (or not)?

Discussion leader: Geert Goemans

Pdficon small.gifBarluenga et al.,2006 sympatric.pdf

and the reply ... and as dessert the reply to the reply

Pdficon small.gifreply to Barluenga et al., 2006.pdf

Tuesday, March 31st, 2009: Mixed Yule Coalescents, Very Low Gene Flow, mtDNA Substructuring & Speciation

Discussion leader: Chris Owen

Pdficon small.gifPhilTransRSocB Papadopoulou et al. 2008.pdf

Monday, April 6th, 2009: Can reproductive Isolation Evolve on Ecological Time Scales?

Discussion leader: Geert Goemans

Pdficon small.gifHendry et al., 2007 speed of speciation.pdf

Tuesday, April 7th, 2009:

Discussion leader: Chris Owen


Instead of meeting Monday, April 13th and Tuesday April 14th, can we meet

Friday April 17th

(two hours: 2:00 to 4:00)

Discussion leader: Roberta Engel

Topic: Ernst Mayr and Speciation Theory

Monday, April 20th, 2009:

Discussion leader: Beth Wade

Topic: Distinguishing Hybridization from Lineage Sorting

Tuesday, April 21st, 2009:

Discussion leader: Thiago Rangel

Topic: TBA

Monday, April 27th, 2009:

Discussion leader: Beth Wade

Topic: How much gene flow occurs across species boundaries

Tuesday, April 28th, 2009:

Discussion leader: Thiago Rangel

Topic: TBA End of semester

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